Southern Oscillations
The southern oscillation is defined as the barametric pressure difference between Tahiti and the Darwin Islands at sea level. The southern oscillation is a predictor of el nino which in turn is thought to be a driver of world-wide weather. Specifically, repeated southern oscillation values less than -1 typically defines an el nino.
data(southernosc)
The format is: Time-Series [1:456] from 1952 to 1990: -0.7 1.3 0.1 -0.9 0.8 1.6 1.7 1.4 1.4 1.5 ...
Originally downloaded from http://www.itl.nist.gov/div898/handbook/pmc/section4/pmc4412.htm
A description was available at http://www.itl.nist.gov/div898/handbook/pmc/section4/pmc4461.htm
data(southernosc) plot(southernosc)
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